{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "cell line", "cell type", "protein", "DNA"], "input": "Oct2 expression was unable to stimulate a multimerized octamer enhancer element in HeLa cells , however."}
{"RNA": [], "cell line": ["HeLa cells"], "cell type": [], "protein": ["Oct2"], "DNA": ["multimerized octamer enhancer element"]}